/* General Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f9;
}

/* Login Page */
.login-page {
    background: linear-gradient(135deg, #003366 0%, #004080 50%, #0066cc 100%);
    min-height: 100vh;
}

.login-page .card {
    border-radius: 12px;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    padding: 48px 0 0;
    box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
    background: #fff;
}

.sidebar .nav-link {
    font-weight: 500;
    color: #333;
    padding: 12px 20px;
    border-radius: 0;
    transition: all 0.2s;
}

.sidebar .nav-link:hover {
    background-color: #e9ecef;
    color: #003366;
}

.sidebar .nav-link.active {
    color: #003366;
    background-color: #e8f0fe;
    border-right: 3px solid #003366;
}

.sidebar .nav-link i {
    width: 24px;
}

/* Main Content */
main {
    margin-top: 56px;
}

/* Cards */
.card {
    border-radius: 10px;
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-1px);
}

/* Tables */
.table th {
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #555;
}

/* Buttons */
.btn-primary {
    background-color: #003366;
    border-color: #003366;
}

.btn-primary:hover {
    background-color: #004080;
    border-color: #004080;
}

/* Navbar */
.navbar {
    z-index: 1030;
}

/* Responsive */
@media (max-width: 767.98px) {
    .sidebar {
        position: static;
        min-height: auto;
        margin-top: 56px;
    }
    
    main {
        margin-top: 0;
    }
}